What does "Higher Order Tracking Accuracy" mean?

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Higher Order Tracking Accuracy (HOTA) is a measure used to evaluate how well systems can track multiple objects in videos. It goes beyond just keeping track of where each object is and also looks at how accurately the system identifies and maintains the correct links between the objects over time.

This metric takes into account both the precision of the object tracking and the ability to match objects consistently across different frames. A system that scores well in HOTA shows that it can not only see where the objects are but can also understand which object is which as they move around. This is especially important in complex scenes where many objects might be close to each other.

Using HOTA helps developers create better tracking systems that can be applied in real-world situations, such as surveillance, sports analysis, and autonomous vehicles. By improving HOTA scores, these systems can become more reliable in recognizing and following multiple objects accurately.